A roller coaster's velocity at the top of the hill is 5 m/s. Five seconds later it reaches the bottom of the hill with a velocity of 30 m/s. What is the acceleration
of the coaster? Remember, change in velocity divided by time is acceleration. *

25 m/s2 (meters per second squared)
5 m/s2 (meters per second squared)
5 m/s (meters per second)
25 m/s (meters per second)

An engine undergoes a cycle as shown in the diagram. during a complete cycle the work done by the gas is 28.5×103 j and the energy transferred thermally out is 99.4×103 j. there are 1.5×1024 gas molecules and they have three active degrees of freedom. 6. (6 pts) during which process(es) is energy transferred thermally into the gas? a. 1→2 b. 2→3 c. 4→1 d. 1→2 and 4→1 e. none of the above